Also, I have found out (the hard way) this past weekend after going to the range with some of my troops. I was out of my usual cleaner so I dropped my trigger parts, bolt & carrier parts and charging handle into a tupperware dish filled with "Greased Lightning",,, which is supposed to be a "safe" haousehold cleaner & degreaser, for a soak. WARNING!!!!!!This product also removes the anodizing from aluminum parts, so it was Rustoleum Camo flat black touch-up time till my new charging handle comes in.
It did do a hell of a job cleaning the steel parts with no damage whatsoever, but I'd keep it away from anything aluminum, as I now would any cleaner such as this "kitchen" type cleaner.
From now on I plan on finding some scrap pieces of aluminum that have been anodized and test them in the cleaner first.
The screwed up thing is, it was recomended to me that I use these type of grease-cutting cleaners because they were less harsh(low odor/fumes,easy on the skin, etc.) than the Brake parts cleaner, Bore Blaster, carb cleaner,etc that I was already using. I dont know about you, but I'd call a product that disloves anodizing pretty "Harsh".
Think I'll stick to my old favorites.